1656215052 has 24 divisors (see below), whose sum is σ = 3989164032. Its totient is φ = 534262800.

The previous prime is 1656215039. The next prime is 1656215059. The reversal of 1656215052 is 2505126561.

1656215052 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1656215059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225724 + ... + 2226467.

It is an arithmetic number, because the mean of its divisors is an integer number (166215168).

Almost surely, 2^1656215052 is an apocalyptic number.

1656215052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1656215052 is an abundant number, since it is smaller than the sum of its proper divisors (2332948980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1656215052 is a wasteful number, since it uses less digits than its factorization.

1656215052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452229 (or 4452227 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 1656215052 is about 40696.6221202694. The cubic root of 1656215052 is about 1183.1475509348.

The spelling of 1656215052 in words is "one billion, six hundred fifty-six million, two hundred fifteen thousand, fifty-two".